Carriages for use on scaffolds



March 18, 1958 B. A. GUZZARDO ETAL 298275535 CARRIAGES FOR USE QN scAFFoLDs Filed Jan. 18, 1954 d/E/Lco Ma/3%,-

at the longitudinal center of the carriage.

United States Patent CARRIAGES FOR USE N SCAFFGLDS Bennie A. Guzzardo and Dino Ungaretti, Chicago, Iii.

Application January 18, 1954, Serial No. 4%,656

9 Claims. (Cl. 364-1) The invention relates to portable carriages for supporting materials, such as paint, or tools, such as brushes, on an extensible scaffold for rendering them readily accessible to a workman on different portions of the scaffold, and expediting and facilitating the performance of the work.

One object of the invention is to provide a portable carriage for this purpose, which is usable with a scaffold Vwhich is Vcomposed of extensibly connected sections hav- .ing interdigitated bars.

Another object of the invention is to provide a portable carriage for this purpose, which is applicable to scaffolds of different widths and thickness.

Other objects of the invention will appear from the detailed description.

The invention consists in the several novel features which are hereinafter set forth and are more particularly defined by claims at the conclusion hereof.

In the drawings:

Fig. l is a perspective view of a carriage embodying the invention on a scaffold composed of interdigitated bars;

Fig. 2 is a central vertical transverse section; and

Fig. 3 is a section taken on line 3 3 of Fig. 2.

The invention is exemplified with an extensible scaffold which is composed of a pair of slidably connected sections, each including longitudinal bars. One section includes a series of bars 1t) or slats cross-connected by a bar 13, and the other section includes a series of bars or slats 12 cross-connected by a bar 13. The bars 10 and 11 are interdigit'ated and relatively slidable to vary the length of the scaffold for use in areas or rooms of different length. The scaffold may be supported on trestles for inside Work or on suspension devices, as well understood in the art.

The portable carriage, generally designated 4 for use by a workman, such as a painter, on the scaffold, comprises a frame which includes three symmetrically arranged arms or members supported on rollers adapted to travel lengthwise of the scaffold. A tubular pedestal 5 is xedly mounted on the central portion of the carriage 1 frame, a post 6 is slidably fitted in said pedestal, and a suitable holder 7 for materials used for cleaning and painting, or tools, such as brushes and Scrapers, used in connection with such jobs, is fixedly mounted on the post 6.v The holder is adjustable vertically for the convenience lof the workman, by sliding the post 5 in the pedestal 5 and xing it in its assigned position by a set screw 8. The -holder 7 is provided with a rim 9 for retaining articles on the holder.

The carriage frame includes a pair of integral arms and .16 which are spaced apart longitudinally at one side of the scaffold, and an arm 17 including an extensible section 18 at the opposite side of the scaffold substantially Each of the arms 15 and 16 and the section 18 of arm 17 has con- "ne'cjted'to 'its outer endY a'pair of rollers for supporting V and guiding the carriage lengthwise of the scaffold. Each pair of rollers includes an upper roller 24, adapted to ride on the top surface, and a lower roller 26 adapted for rolling contact with the under surface of the scaffold. Each upper roller 24 on the arms 15 and 16 is journalled on a pin Z5 which is supported in depending lugs 26 on said arms, and the upper roller 24 on arm is journalled on a pin 27 mounted in depending lugs 2 on the section 1S of arm 17. The pairs of rollers 2 are symmetrically arranged over the scaffold to support and guide the carriage at two points spaced apart longitudinally on one side of the scaffold and at one point on the opposite side of the receptacle. Each lower roll Z6 is journalled on a pin Sii mounted in a bracket 34 which is fixed to a rod 35 which extends through one of the lugs 26 on the outer ends of arms 15 and 16 and the extensible section 18 on arm 17. Wing nuts 36 threaded to the upper ends of rods 35 support the brackets 34 for vertical adjustment of the lower rollers 26 to and from the upper rollers for rolling contact with the underside of scaiolds of different thickness. The bracket 3d, rods 35 and nuts 36 function as hangers for adjustably supporting the lower rollers 25 from the arms 15 and 16 and section 18 on arm 17. The extensible section 13 Ais confined in a channel 38 in the arm 17 and a bolt 39 extends through said arm and a slot dii in extension 13 which extends transversely of the scaffold for adjusting the section 18 ofthe carriage frame transversely of the scaffold, for adjusting said pair of rolls to travel on the top and bottom of the side margins of scaffolds of different widths. The three upper rollers 2d support the carriage for free rolling movement on the top of and lengthwise of the scaffold. The three lower rollers 26 have rolhng engagement with the under side of the scaffold for holding the carriage against upward displacement. Lugs 37 on brackets 34 extend to lap the outer side of the outermost of the lapped portions of bars 10 and 11 or the scaffold for preventing transverse movement of the carriage on the scaffold. When the sections of the platform are extended as shown in Fig. 1, the bars at one end of the scaffold project longitudinally from the adjacent ends of the bars 11 and at the other end of the platform the bars 11 will project longitudinally from the ends of bars 10. This leaves a transverse gap between the outer faces of the outermost bars 1f? and 1li at one side margin and one end of the scarfold, and a transverse gap between the outer faces of the outermost bars It@ and 11 at the opposite end and the other side margin or" the scaffold. As a result, the carriage will not be held against transverse movement on the scaffold by the lugs 37 on the brackets 34. The rollers 24 and 2a being of sucient width travel sufficiently close to either end of the scaffold so that the lugs 37 on one of the brackets 3d is alongside of one of these gaps, the carriage, unless otherwise guided, will not be confined against transverse movement on the scaffold. In order to prevent such transverse movement of the carriage when the scaffold is extended, dogs 4l? and 41 are pivoted on the carriage, have distal ends 42 which are adapted to ride on a bar of one section and to drop into and iit in the space between contiguous bars in the other section for guiding the carriage on' the scaold. Each dog is provided with shoulder d3 which rides on the contiguous bars when the dog is dropped, and inclines ed for camming the dog over the end of a bar in the space between contiguous bars as the carriage travels along the scaffold. Rollers 242- and 26 are of sufficient width to span or lap a pair of contiguous bars it) and 11 of the scaffold so that when the rollers vride off the end of one of said bars in their travel along the scaffold, they will retain rolling engagement with the other of the pair of bars. Foot pieces or pedals are provided onthe carriage frame whereby the workmen said section.

can easily push the carriage and the holder thereon toY different longitudinal portions of the scaold.

The operation and use of the carriage will be as follows: the sections of the scaiold will beadjusted tothe length desired according'to the area to be worked on Vand suitably supported, aswell understood in the art.

The carriage which is separate from the scaffold is placed the sectiond of arm 17 have been detached from said section so that the frame of the carriage can be placed on the top of the scalold. The carriage can be dropped on and slipped transversely over the scaold with one side margin of the scaold passing between the rollers V26 and 25. on the arms 15 and 16 so that the carriage will be supported on the scalold. Next, the lower roller 26, bracket 34 and rodV 35 are connected to the section 15 of arm 17 and the nut 36 is applied to rod 35 Vtransversely so that Ythe rollers 24V and 26 at opposite sides of the carriage will be vertically aligned with the two outermost bars and 11 at the sides of the'scaffold. When the bolt 19 is tightened the carriage will have the correct width for travel on and be guided on the scafold. This adjustment of the section 18 and rollers thereon also provides for varying the transverse Y spacing between the rollers at the sides of the carriage for the travel of said rollers on the side margins of scaffolds `of dilferent widths with each roller positioned to span the two outermost bars 10 and 11 of the scaffold. The lower rollers 26 hold the carriage against upward displacement or tilting on the scaiold and are adjustable by means of rolls 35 and nuts 36 for rolling engagement with the under side of scaolds of dilerent thickness.

The carriage may be easily rolled from end to end of the scaffold to move the holder 7 with one or more pails of paint or other material and tools, such as brushes or scraper thereon, for convenient reach of the worker at any point along the scalold where Work is to be done. This greatly facilitates the work. During the travel of the carriage when the rollers 26 and 24 span the lapped portions of the two outermost bars 10 and 11 of the scaffold, the lugs 37 will lap the outer sides of the outert most bars and prevent transverse movement of the carriage on the scaffold.

When the sections of the scaffold are extended, as shown in Fig. l, and before the carriage is rolled suiciently close to one of the ends of the scaffold to produce a transverse gap betweenV a lug 37 on one of the brackets 34 and the adjacent side portion of the scafagainst transverse movement after the rollers 24 and 26 on the section 18 pass off the end of the bar 11 between them and ride only on the bar 10. When the carriage is moved to the opposite end of the scaffold, and before the rollers 24 and 26 on arm 16 pass olf the endv ofV the bar lil, the dog 41 will drop into a space betweena contiguous pair of bars 11 and hold the carriage against n transverse movement during the continued travelof, the carriage and guide the carriage to travel longitudinally. VThe upper andlower rollers being of suicient width Lengineers thereonafter the bracket 34, roller V426 and rod 35 Von Y t moval of the carriage from the scaiold.A

to engage Vand span the outermost pair of barsV 10 and 11 of the lapped bars of the scaffold, they will ride olf the Youtermost one of these bars, and will remain operative atleast with a single barrof the scaffold to support or retain the carriage against vertical movement relatively to the scaffold. The table 51 is used to support the material, such as paint, and any tools, such as brushes, scrapers. The carriage may be easily rolled along the scaffold to keep the material and tools within convenient reach of the worker whileL he works'on spaces adiacent to or over different portions'of the Vscalold. The worker can move the carriage by pressure on one of the pedals 56. This operation and use Afacilitate and expedite work by the workmanron the carriage.

The carriage can be readily mounted on the scatfold and removed therefrom for independently storing it for subsequent uses. The upper and lower rollers safeguard vertical displacement of the carriage while it travels on the scaold and are readily adjustable for travel on scalolds of diiferent widths and thickness. The holder for the materials and tools is vertically adjustable for the convenience of workers of different heights. The carriage is simple in construction, can be produced at a low cost, and can be made light in weight and is adapted for kuse on an extensible scaffold composed of interdigitated bars.

' The invention is not to be understood as restricted toV the details set forth since these may be modied within the spirit and scope of the invention.

Having thus described the invention what we claim as new and desire to secure by Letters Patent is:

l. A material or tool supporting carriage adapted for longitudinal travel and demountabiy supported on a portable scaffold composed of sections Ywith interdigitated bars slidable into and out of more or less lapped relation, for varying the length of the scaffold, comprising: a frame with means therein for supporting and moving therewith material or tools for a worker on the scaold, devices at both sides of the frame for supporting and guiding the frame to travel freely and longitudinally on and substantially from end to end of the scaffold, Yeach of said devices including a pair of vertically spaced rollers `having' peripheries of sufficient width for engaging the top and bottom faces of a pair of contiguous lapped bars of the scaffold sections and one of said bars when the Ybars are extended to leave spaces between them, Vand means for confining the frame transversely onthe scaffold, demountably connected to the frame, to permit re- 2. A material or tool supporting carriage adaptedfor 'longitudinal travel and demountably supported on'a portable scaffold composed of sections and interdigita'ted bars slidable intorand out of more or lcsslapped relation, for varying the length of the scaffold, comprising: a frame with means thereon for supporting and ymoving Y therewith material or tools for a worker on the scaiold,

devices at both sides of the frame for supporting and guiding the frame to travel freely and longitudinally on and substantially from end to end of the scaold,`eacl1 of said devices including an upper roller journalled on the frame,Y a hanger on the frame `and at one side of the scaffold, and a lower roller journalled on the hanger and spaced vertically from the upper roller, said upper and lower rollers having peripheries of Ysufficient width for engaging the top and bottom faces of a contiguous pair of bars of the sections when they are lapped Vand "one of said bars extended toleave spaces between said bars, the hangers V.being adapted to conne the frame .mi transversely on the scaffold, one or more of s aid'hangers being `detachable from the frame Vfor placement `of the carriage on and permitting its removal fromthe. scaffold.

3.` A material or tool supporting carriage adapted 'for l longitudinal travel and demountably supported on Aa portable Yscaffold composed of sections with interdigitated bars slidable into and out of more or less lapped relation, for varying the length of the scalold, comprising: a frame with means thereon for supporting and moving therewith material or tools for a worker on the scaffold, devices at both sides of the frame for supporting and guiding the frame to travel freely and longitudinally on and substantially from end to end of the scaffold, each of said devices including an upper roller journalled on the frame, a hanger on the frame and at one side of the scaoid, and a lower roller journalled on the hanger and spaced vertically from the upper roller, said upper and lower rollers having peripheries of sufficient width for engaging the top and bottom faces of a contiguous pair of bars of the sections when they are lapped and one of said bars extended to leave spaces between said bars, the hangers being adjustable vertically on the frame for vertically spacing the lower rollers for travel on scalfolds of different thickness, and adapted to confine the frame transversely on the scaffold, one or more of said hangers being detachable from the frame for placement of the rollers on and permitting their removal from the scaffold.

4. A material or tool supporting carriage adapted for longitudinal travel and demountably supported on a portable scaffold composed of sections with interdigitated bars slidable into and out of more or less lapped relation, for varying the length of the scaffold, comprising: a frame with means therein for supporting and moving therewith material or tools for a worker on the scaffold, devices at both sides of the frame for supporting and guiding the frame to travel freely and longitudinally on and substantially from end to end of the scaffold, each of said devices including a pair of vertically spaced rollers having peripheries of sufficient width for engaging the top and bottom faces of a pair of contiguous lapped bars of the scaffold sections and one of said bars when the bars are extended to leave spaces between them, and a dog movably supported on the frame provided with a terminal for dropping into a space between the bars of the sections and confining the carriage transversely when the scaffold is extended and one of the hangers passes beyond the end of its contiguous side bar of the scaffold.

5. A material or tool supporting carriage adapted for longitudinal travel on and demountably supported on a portable scaffold composed of sections with interdigitated bars slidable into more or less lapped relation for varying the length of the scaold, comprising: a frame having means thereon for supporting and moving therewith material or tools for a worker on the scaold and including a pair of arms extending transversely to one side of the scaffold and a single arm extending transversely to the opposite side of the scaffold, devices on the outer ends of the arms for supporting and guiding the frame to travel freely and longitudinally on and substantially from end to end of the scaold, each of said devices including a pair of vertically spaced rollers having peripheries of sufdcient width for engaging the top and bottom of a pair of contiguous bars when they are lapped and one of said bars of the sections are extended to leave spaces between said bars, and means for confining the frame transversely on the scaffold demountably connected to the frame permitting removal of the carriage from the scaffold.

6. A material or tool supporting carriage adapted for longitudinal travel on and demountably supported on a portable scaffold composed of sections with interdigitated bars slidable into more or less lapped relation for varying the length of the scaffold, comprising: a frame having means thereon for supporting and moving therewith material or tools for a worker on the scaffold and including a pair of arms extending transversely to the opposite side of the scaffold, devices on the outer ends of the arms for supporting and guiding the frame to travel freely and longitudinally on and substantially from end to end of the scaffold, each of said devices including a pair of vertically spaced rollers having peripheries of sutiicient width for engaging the top and bottom faces of a pair of contiguous bars when they are lapped and one of Asaid bars ofthe sections are extended to leave spaces between said bars, and means for confining the frame transversely on the scaffold demountably connected to the frame permitting removal of the carriage from the scaffold.

7. A material or tool supporting carriage adapted for longitudinal travel on and demountably supportedv on a portable scaffold composed of sections with interdigitated bars slidable into more or less lapped relation for varying the length of the scaold, comprising: a frame having means thereon for supporting and moving therewith material or tools for a worker on the scatold and including a pair of arms extending transversely to one side of the scaffold and a single arm extending transversely to the opposite side of the scaffold, devices on the outer ends of the arms for supporting and guiding the frame to travel freely and longitudinally on and substantially from end to end of the scaffold, each of said devices including an upper roller journalled on the arm, a hanger on the arm and at the side of the scaffold, a lower roller journalled on the hanger, the upper and lower rollers having peripheries of sufficient width for engaging the top and bottom face of a contiguous pair of bars of the sections when they are lapped and one of the bars when the sections are extended to leave spaces between said bars, the hangers being adapted to confine the frame transversely on the scaffold, one or more of said hangers being detachable from its arm for placement of the carriage on and permitting its removal from the scaffold.

8. A material or tool supporting carriage adapted for longitudinal travel on and demountably supported on a portable scaffold composed of sections with interdigitated bars slidable into more or less lapped relation for varying the length of scaffold, comprising: a frame having means thereon for supporting and moving therewith material or tools for a worker on the scaffold and including a pair of arms extending transversely to one side of the scaffold and a single arm extending transversely to the opposite side of the scaffold, devices on the outer ends of the arms for supporting and guiding the frame to travel freely and longitudinally on and substantially from end to end of the scaffold, each of said devices including an upper roller journalled on the arm, a hanger on the arm and at the side of the scaffold, a lower roller journalled on the hanger, the upper and lower rollers having peripheries of sufficient width for engaging the top and bottom faces of a contiguous pair of bars of the sections where they are lapped and one of the bars when the sections are extended to leave spaces between said bars, the hangers being adapted to confine the frame transversely on the scaffold, one or more of said hangers being detachable from its arm for placement of the carriage on and permitting its removal from the scaffold, and vertically adjustable connections between the hangers and the arms for spacing the lower rollers for travel on the bottom faces of the side bars of scafolds of different widths.

9. A material or tool supporting carriage adapted for longitudinal travel on and demountably supported on a portable scaffold composed of sections with interdigitated bars slidable into more or less lapped relation for varying the length of scaffold, comprising: a frame having means thereon for supporting and moving therewith material or tools for a worker in the scaffold and including a pair of arms extending transversely to one side of the scaffold and a single arm extending transversely to the opposite side of the scaffold, devices on the outer ends of the arms for supporting and guiding the frame to travel freely and longitudinally on and substantially from end to end of the scaffold, each of said devices including an upper roller journalled on the arm, a hanger on the arm and at the side of the scaffold, a lower roller journalled on the hanger, the upper and lower rollers having peripheries of sulhcient width for engaging the top and bottom faces of a contiguous pair of bars of the sections when 7 they are lapped and one of the bars when the sections are extended to leave spaces between said bars, the hangers being adapted to conne the frame transversely on the scaffold, one or more of said hangers being detachable from its arm for placement of the carriage on and permitting its removal from the scaiold, and a pair of dogs pivotally mounted on the frame, provided with terminals adapted to travel on the top face of a bar, and to drop into spaces between contiguous bars at the ends of the VYscaffold respectively when the hangers at the respective Ysides of the frame travel longitudinally beyond the ends of contiguous side bars of the scaffold.

References Cited the le of this-patent e UNITED STATES PATENTS Hook Aug. 20, Leek Sept. 30,

Y Schwedt Feb. 13, Pott Sept. 10,

Cox Jan. 18,

Arnould Dec. 6, 

